mitt romney told voters yesterday, the debates are about more than who comes out on top. they are a chance for a month-long conversation with the american people. >> managing expectations, as always. tahman bradley, live in washington for us. thanks, tahman. >>> and abc news coverage of the debate begins tomorrow night at 9:00 eastern, 6:00 pacific. keep right here on abc. >>> and there is word this morning of a series of secret meetings at the white house. focusing on the threat from al qaeda in north africa. "the washington post" says the meetings came before the 9/11 attacks on u.s. compounds in libya. during the discussions, the possibility of unilateral strikes against al qaeda targets in that region were reportedly considered for the very first time. >>> and there are plenty of questions to answer about the derailment of an amtrak passenger train in california's central valley. at least 20 people were injured when several cars came off the rails after colliding with a big rig truck. a second train/truck crash happened about ten miles away, leaving the truck driver w